Make Buildings rise from the ground
you could just put the building below the scene (ground) and animate them on the z-axis to go up. if you want the camera to go around the block smoothly change the origin of the camera. You can do this by getting an object out of view and the camera to make the block in the centre of rotation 



shift select them both. 



Then just rotate them on the z-axis by pressing "r" then "z". this will make them rotate around the block.



and now all you need to do is animate it!